101919428 has 24 divisors (see below), whose sum is σ = 192601752. Its totient is φ = 46911744.

The previous prime is 101919421. The next prime is 101919431. The reversal of 101919428 is 824919101.

It can be written as a sum of positive squares in 4 ways, for example, as 6310144 + 95609284 = 2512^2 + 9778^2 .

It is not an unprimeable number, because it can be changed into a prime (101919421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18176 + ... + 23112.

It is an arithmetic number, because the mean of its divisors is an integer number (8025073).

Almost surely, 2^101919428 is an apocalyptic number.

It is an amenable number.

101919428 is a deficient number, since it is larger than the sum of its proper divisors (90682324).

101919428 is a wasteful number, since it uses less digits than its factorization.

101919428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5351 (or 5349 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 35.

The square root of 101919428 is about 10095.5152419280. The cubic root of 101919428 is about 467.1098146531.

The spelling of 101919428 in words is "one hundred one million, nine hundred nineteen thousand, four hundred twenty-eight".